# HG changeset patch
# User Ingo Weinzierl <ingo.weinzierl@intevation.de>
# Date 1274802091 0
# Node ID 7f3154331bc143aa5b80b3021fdbcb24723afc11
# Parent  778d86255d76c6ab28aad54bb01ad325123bd422
Use the chart size/height to export it to pdf. The chart's aspect ratio keeps alive if the size exceeds the maximum page size (issue290).

gnv-artifacts/trunk@1124 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r 778d86255d76 -r 7f3154331bc1 gnv-artifacts/ChangeLog
--- a/gnv-artifacts/ChangeLog	Tue May 25 13:57:48 2010 +0000
+++ b/gnv-artifacts/ChangeLog	Tue May 25 15:41:31 2010 +0000
@@ -1,3 +1,16 @@
+2010-05-25  Ingo Weinzierl <ingo.weinzierl@intevation.de>
+
+	  Issue290
+
+	* src/main/java/de/intevation/gnv/state/timeseries/TimeSeriesOutputState.java:
+	  Added chart width and chart height as new parameters for the pdf creation.
+
+	* src/main/java/de/intevation/gnv/exports/ChartExportHelper.java: Don't use
+	  the maximum size of a pdf page to draw the chart but use the parameter
+	  chart width and chart height. Scale the chart down if its size and/or
+	  height exceed the maximum size of the pdf page - the original aspect
+	  ratio keeps alive.
+
 2010-05-25  Ingo Weinzierl <ingo.weinzierl@intevation.de>
 
 	  Issue287
diff -r 778d86255d76 -r 7f3154331bc1 gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java
--- a/gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java	Tue May 25 13:57:48 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/exports/ChartExportHelper.java	Tue May 25 15:41:31 2010 +0000
@@ -9,6 +9,8 @@
 import com.lowagie.text.pdf.PdfTemplate;
 import com.lowagie.text.pdf.PdfWriter;
 
+import de.intevation.artifacts.CallContext;
+
 import de.intevation.artifactdatabase.XMLUtils;
 
 import de.intevation.gnv.chart.Chart;
@@ -237,17 +239,50 @@
         float        marginLeft,
         float        marginRight,
         float        marginTop,
-        float        marginBottom
+        float        marginBottom,
+        CallContext  context
     ) {
         log.info("export chart as pdf.");
 
         if (pageFormat == null)
             pageFormat = DEFAULT_PAGE_SIZE;
 
+        // max size of the chart
         Rectangle page = PageSize.getRectangle(pageFormat);
         int pageWidth  = (int) (page.getRight(marginRight) - page.getLeft(marginLeft));
         int pageHeight = (int) (page.getTop(marginTop) - page.getBottom(marginBottom));
 
+        // the chart width
+        int chartWidth  = (Integer) context.getContextValue("chart.width");
+        int chartHeight = (Integer) context.getContextValue("chart.height");
+
+        int width  = 0;
+        int height = 0;
+        if (landscape) {
+            width  = pageHeight;
+            height = pageWidth;
+        }
+        else {
+            width  = pageWidth;
+            height = pageHeight;
+        }
+
+        if (chartWidth > width) {
+            log.warn("Width of the chart is too big for pdf -> resize it now.");
+            double ratio = ((double)width) / chartWidth;
+            chartWidth  *= ratio;
+            chartHeight *= ratio;
+            log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
+        }
+
+        if (chartHeight > height) {
+            log.warn("Height of the chart is too big for pdf -> resize it now.");
+            double ratio = ((double)height) / chartHeight;
+            chartWidth  *= ratio;
+            chartHeight *= ratio;
+            log.debug("Resized chart to " + chartWidth + "x" + chartHeight);
+        }
+
         Document document = null;
         if (landscape) {
             document = new Document(page.rotate());
@@ -265,20 +300,10 @@
 
             PdfContentByte content  = writer.getDirectContent();
 
-            int width  = 0;
-            int height = 0;
-            if (landscape) {
-                width  = pageHeight;
-                height = pageWidth;
-            }
-            else {
-                width  = pageWidth;
-                height = pageHeight;
-            }
-
             PdfTemplate template = content.createTemplate(width, height);
             Graphics2D  graphics = template.createGraphics(width, height);
-            Rectangle2D area = new Rectangle2D.Double(0.0D, 0.0D,width,height);
+            Rectangle2D area = new Rectangle2D.Double(
+                0.0D, 0.0D, chartWidth, chartHeight);
 
             chart.draw(graphics, area);
             graphics.dispose();
diff -r 778d86255d76 -r 7f3154331bc1 gnv-artifacts/src/main/java/de/intevation/gnv/state/timeseries/TimeSeriesOutputState.java
--- a/gnv-artifacts/src/main/java/de/intevation/gnv/state/timeseries/TimeSeriesOutputState.java	Tue May 25 13:57:48 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/state/timeseries/TimeSeriesOutputState.java	Tue May 25 15:41:31 2010 +0000
@@ -375,6 +375,12 @@
                     );
                 }
                 else if (mode.equalsIgnoreCase("pdf")) {
+                    callContext.putContextValue("chart.width", chartWidth);
+                    callContext.putContextValue("chart.height", chartHeight);
+                    callContext.putContextValue("shapes.visible", sVisible);
+                    callContext.putContextValue("lines.visible", lVisible);
+                    callContext.putContextValue("locale", locale);
+
                     createPDF(
                         outputStream,
                         parameters,
@@ -384,9 +390,6 @@
                         uuid,
                         "A4",
                         true,
-                        lVisible,
-                        sVisible,
-                        locale,
                         callContext
                     );
                 }
@@ -846,9 +849,6 @@
         String       uuid,
         String       exportFormat,
         boolean      landscape,
-        boolean      linesVisible,
-        boolean      shapesVisible,
-        Locale       locale,
         CallContext  context
     ) {
         Chart chart = getChart(
@@ -858,10 +858,10 @@
             measurements,
             dates,
             getChartResult(uuid, context),
-            locale,
+            (Locale) context.getContextValue("locale"),
             uuid,
-            linesVisible,
-            shapesVisible,
+            Boolean.TRUE.equals(context.getContextValue("lines.visible")),
+            Boolean.TRUE.equals(context.getContextValue("shapes.visible")),
             context
         );
 
@@ -875,7 +875,8 @@
             chart.generateChart(),
             "A4",
             PDF_FORMAT_LANDSCAPE,
-            50F, 50F, 50F, 50F
+            50F, 50F, 50F, 50F,
+            context
         );
     }